| From: | Richard Guo <guofenglinux(at)gmail(dot)com> |
|---|---|
| To: | Егор Чиндяскин <kyzevan23(at)mail(dot)ru>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #17583: Server crashes on executing CROSS JOIN with very big number of tables |
| Date: | 2022-08-12 09:22:57 |
| Message-ID: | CAMbWs48JpVuP-89Pspros8JWy3EVMVPoVjF2-hnZHgatf=EKKw@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Fri, Aug 12, 2022 at 5:03 PM Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
>
> On Fri, Aug 12, 2022 at 4:11 PM PG Bug reporting form <
> noreply(at)postgresql(dot)org> wrote:
>
>> I got server crashed while executing the following query:
>> (echo "SELECT * FROM t1 ";for((i=2;i<100000;i++));do echo "CROSS JOIN t$i
>> ";done; echo ";") | psql
>> with the following backtrace below:
>> Core was generated by `postgres: egorchin egorchin [local] SELECT
>>
>
>
> Function transformFromClauseItem() is driven to stack overflow. We need
> to add some check_stack_depth() checks here and maybe other more places.
>
Attach a patch to add the check for transformFromClauseItem.
Thanks
Richard
| Attachment | Content-Type | Size |
|---|---|---|
| v1-0001-Check-for-stack-overflow-in-transformFromClauseIt.patch | application/octet-stream | 839 bytes |
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